73450640 has 40 divisors (see below), whose sum is σ = 171471168. Its totient is φ = 29260160.

The previous prime is 73450627. The next prime is 73450651. The reversal of 73450640 is 4605437.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19295 + ... + 22785.

Almost surely, 2^73450640 is an apocalyptic number.

It is an amenable number.

73450640 is an abundant number, since it is smaller than the sum of its proper divisors (98020528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73450640 is a wasteful number, since it uses less digits than its factorization.

73450640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767 (or 3761 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 73450640 is about 8570.3348826052. The cubic root of 73450640 is about 418.7921457543.

The spelling of 73450640 in words is "seventy-three million, four hundred fifty thousand, six hundred forty".